University of Khartoum

Some Studies on the Improvement and Utilization of Sugarcane Tops

Some Studies on the Improvement and Utilization of Sugarcane Tops

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Title: Some Studies on the Improvement and Utilization of Sugarcane Tops
Author: Yagoub, Nafisa Mohamed Abakar
Abstract: Series of experiments were conducted to evaluate the morphological and chemical composition of sugarcane tops, and to enhance the nutritive value of sugarcane tops by broiler litter or urea treatments and its uses as source of roughage for fattening growing Kenena X Friesian bulls. The objective of experiment one was conducted to study the morphological fractions, chemical composition and in vitro gas production of four sugarcane tops. Samples were collected from different Sudanese sugar schemes namely Kenana, Assalaya, Eljeneed and Sinnar. The whole sugarcane tops were separated into stem and leaves (leaf blade and sheath). The results showed Stem contribution to whole top is significantly varied from 56.62% for Sinar to 41.91% for Kenana. Leaf blade contribution to leaves is significantly varied from 37.56% for Kenana to 26.38% for Sinar. The leaf blade tends to have higher crude protein (CP) content compared to the other tops fractions. Acid detergent fiber (ADF) level was higher in stem than in leaves. The morphological fractions differed in the volume of gas produced, Sinar leaf sheath and Kenana stem showed higher values. There was a high variation in the proportion of morphological fractions of sugarcane tops for different schemes. The morphological fractions differed in chemical composition and in vitro gas production. Gas production showed an inverse relationship with CP, and ADF contents of the morphological fractions. Experiment two was designed to estimate the effect of ensiled Kenana sugarcane tops with 5% urea or 30% broiler litter on chemical composition, rumen degradability and in vitro gas production. The results showed that urea treatment sugarcane tops (UTSCT) and broiler litter treatment sugarcane tops (BLTSCT) increased CP content of the sugarcane tops significantly (P<0.05) from 7.18% to 11.36% and 26.27% for untreated one (SCT). NDF content was decreased (P<0.05) from 63.28% for SCT to 62.63% for BLTSCT and 59.21% for UTSCT, respectively. BLTSCT had higher degradation than UTSCT and SCT. Significantly (P < 0.05) higher volume in gas production was observed in BLTSCT compared to UTSCT and SCT. Experiment three was carried out to study the effects of supplemented concentrate (sorghum 23%, groundnut cake20%, wheat bran 27.5%, molasses 27%, urea 1%, lime stone o.5% and salt 1%) with untreated and treated sugarcane tops (urea or poultry litter) on growth performance, digestibility and rumen fermentation in bulls. Fifteen crossbred Kenana X Friesian bulls (an average body weight and age 129 ± 0.5 kg and 8-10 months respectively) were divided into three groups in each treatment (five animal per treatment); A (concentrate + SCT), B (concentrate + UTSCT) and C (concentrate + BLTSCT). Nutrients digestibility was also performed on 9 bulls allocated to treatments. The experiment lasted for 90 days. Daily feed intake (DFI), daily weight gain (DWG) and final body weight (FBW) were significantly (P<0.05) higher in bulls fed BLTSCT than those fed UTSCT and SCT. However, higher values of DFI and DWG were recorded for bulls fed BLTSCT or UTSCT respectively. The group that fed BLTSCT had a higher feed intake and nutrient digestibility of DM, CP and NDF than groups those fed UTSCT and SCT. Rumen fermentation study showed that supplementation of concentrate with broiler litter or urea treated SCT had a higher VFA and ammonia nitrogen concentration than the group supplemented with SCT. These studies concluded that Kenana tops had the higher amounts of Leaves, so the higher CP content and less content of cell wall components and therefore higher nutritional value. Supplemented concentrate with 30% broiler litter or 5% urea treated sugarcane tops can be use effectively and economically in Kenana X Friesian bulls feed.
URI: http://khartoumspace.uofk.edu/123456789/25889


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